Gas-burner.



G. E. NIGKOL.

GAS BURNER.

APPLIGATION FILED MARJ 1913. 1 081,275 Patented Dec. 9, 1913.

lwuem coz UNITED STATES PATENT FFICE.

GEORGE E. NIOKOL, 0F BALTIMORE, MARYLAND, ASSIG-NOIB, TD LYON, CONK'LIN &; 00., OF BALTIMORE, MARYLAND, A CORPORATION 01? DELA'WARE.

GAS-BURNER.

Specification of Letters Patent.

Application filed March 7, 1913.

Patented Dec. 9,1913.

Seria1 No. 752,546.

To all rv/ 10m it may concern:

Be it known that l, GEORGE E. NlonoL, a citizen of the United States, residing at Baltimore, in the State of Maryland, have invented certain new and useful Improvements in Gas-Burners, of which the follow ing is a specification.

This invention relates to an improved gas-burner of the type in which the gascontrolling valve is known as a needle valve.

The so-called needle valve of gasburners is usually a steel stem having a screw-thread that turns in and engages a thread in the metal body-part of the burner; at one end the stem is provided with a head or knob which serves to turn the stem, and the other end of the stem has a cone-shaped or tapered point that opens and closes the small aperture out through which escapes the gas. By turning the stem one way the tapered point is forced into and closes the said small aperture, and by turning the stem in the reverse direction the tapered point recedes and opens said aperture. The trequcnt opening and closingof this valve by the cndwise movement of the tapered point, has the effect to gradually expand and onlarge the gas aperture, until it becomes so large as to unlit it for producing the purpose intended, which of course is a serious bj ection.

The object of the present invention is to provide an improvement in this type of burner by which the same endwise movement of the valve-stem may be employed, and a similar gas-aperture, but without the objectionable result noted.

The invention is illustrated in the accompanying drawing in which,

Figure 1 is a section view of part of a burner. 2 is a view, on a larger scale than Fig. 1, of the screw cap which has the gas-escape aperture; this view looks into the cap. Fig. 3 is a section view of the screw cap.

The body-part of the burner has a small gas-chamber, L, the entrance to which has a screw-thread, 5, for the attachment of a pipe (not shown) that supplies the gas; the body has a longitudinal bore for the valvestem, 6, which is provided with a screwthrcad, 7, and at one end has a head or knob, 8. By turning the valve-stem the screwthread causes it to move endwise. The smooth part of the stem near the head, 8, turns in packing, 9, in a stu'tling box formed by a screw-collar, 10. The stem at its other end has a cone-valve, 12, that closes against a seat, .11, in the bore. Between the conevalvc, 12. and the scrcw-threzul, 7, the valvestcm, 6, is smaller than the bore, and a passage, 13, leads from the small chamber, 4:, to that part of the bore between the valveseat, 11, and said screw-thread. Tt w1ll be understood that when the cone-valve, 12, is in close contact with the seat, 11, gas communication is cutoff from the gas-chamber, t, to the reduced. passage, 14:, at the end of the body and also to the escape aperture, 15.

The body-part end, 1(i,has an exterior screwthread with which a screwcap, 1T, engages; the aperture, 15, is in the cap. This cap and the end, 16, form an enlarged chamber, 18, at the end of: the passage, 14; the point end of the valve never projects from the end of the passage, 14. At the inner side of the cap and surrounding the outlet or aperture, 15, is an inward projection or point, 19; this gives greater length to the outlet or aperture which tends to prevent a sputtering oi? the escaping and the point, 19, reduces the chances of any small particle of dirt, that may be in the gas, closing said aperture; the enlarged chamber serves to collect the small particles.

It will. be seen that the outlet or aperture, 15, in this improved structure, will not be expanded or enlarged by the action of the point-end of a needle-valve.

Having thus described my invention what I claim and desire to secure by Let ters Patent is In a gas burner, the combination cat a body-part having a bore provided therein which extends through the cap and through with a valve-seat; a valve having a stem said inward projecting point. 10 screw-threaded and working in said bore; In testimony whereof I affix my signature and a cap taking over and covering the end in presence of two witnesses.

of said body-part and forming a chamber GEORGE E. NICKOL. larger than said bore and said cap provided Vitnesses:

at its inner side with an inward projection G. FERD. VOG'r,

or point l9, and said cap having an aperture CHAS. B. MANN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

